Emily Hunt www.space.com
A failed Soviet Venus lander will fall back to Earth after being stranded for 53 years
"In about two weeks from now, on or near May 9-10, an unusual uncontrolled reentry will happen."
A science-oriented feed about planetary science! Part of the Astronomy feeds network. Astronomers can sign up to post here via @bot.astronomy.blue Contains posts from signed up users with #planetaryscience or #planetsci. Posts here are also included in the main Astronomy feed.
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I'm excited to be giving my first #NASA hyperwall talks at #EGU25 and helping #earthscience researchers use @scixcommunity.bsky.social
#heliophysics #planetaryscience #astrophysics
Science Explorer (SciX)@scixcommunity.bsky.social
#EGU25 3 opportunities APR 30 to improve your #research efficiency w/ SciX 1545 "Accelerating the Discovery of #NASA #Science" w/ @bartlettastro.bsky.social in NASA booth 1720 "Enhancing #Geoscience Collaboration and Discovery" w/ Mike Kurtz in Room -2.32 Demos all day in NASA booth #earthscience
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This starts out cool ("Oh, hey, a failed Venus lander will reenter Earth's atmosphere! Cool!"). Then it gets ominous ("uhh, it may survive reentry and hit the surface -- we don't know where"). A real rollercoaster of exploration emotions!
#planetaryscience
www.space.com/space-explor...
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The mystery of Mars methane 🤔
Before phosphine on Venus and DMS on K2-18b, methane on Mars was the hottest biosignature around, and a major result for Curiosity.
Problem is, I've been searching for it with ExoMars for seven years and haven't seen a trace.....🧵
#planetsci 🧪🔭
doi.org/10.1029/2024...
doi.org
Questioning the Reliability of Methane Detections on Mars by the Curiosity Rover
Methane levels in Curiosity's Tunable Laser Spectrometer foreoptics chamber are 3–4 orders of magnitude higher than in the sample cell Using a diffusion model, we propose a leakage scenario from ...
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Another Friday and another #FridayScienceDiscussion (and this time I remembered to post about it). We've got asteroid fly-bys, ancient Mars, and Titan. Lots of fun stuff.
#planetaryscience 🧪
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Open University academic, Professor Mahesh Anand, is the first UK scientist to be given Moon samples from the Chang'e-5 China mission. @openuniversity.bsky.social #openuniversity #planetaryscience 🪐
www.bbc.co.uk/news/article...
www.bbc.co.uk
Open University scientist given Moon samples from China mission
Prof Mahesh Anand is the first UK scientist chosen to receive samples from the 2020 Chang'e-5 probe.
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Lunar dust: 'let’s reconfigure it from a nuisance to a planetary-scale ecology, responding actively to disturbance by flowing and sticking to moving bodies, even using them for transport off-planet'.
- How we let the Moon die, and why it isn't dead, 2025 🧪 #PlanetSci
ucp.manifoldapp.org
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I don't know enough about planetary interiors to comment on the details of this work, but I am very interested in the possible implications "for Mars’ ancient dynamo and possibly how long it was able to sustain an atmosphere.”
#planetsci 🧪
www.discovermagazine.com/the-sciences...
www.discovermagazine.com
Mars' Liquid Core May Have Once Powered Only Half of its Magnetic Field
Learn about Mars' defunct magnetic field, which may have sustained life on the planet and covered only its southern hemisphere over 4 billion years ago.
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Wow ! Curiosity rover has found compelling evidence of an ancient carbon cycle on Mars—similar to Earth’s, but incomplete. This may change how we think about Mars’ climate history. #Mars #PlanetaryScience
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I'm amazed at what people do with the publicly available data of Lucy's encounter of asteroid (52246) Donaldjohanson!
Here is a 3D model made by Doug Ellison (@dougellison.bsky.social) from the images in the released GIF. Wonderful! 🤩
sketchfab.com/3d-models/as...
#PlanetSci #SciComm 🧪
sketchfab.com
Asteroid DJ from Gif - 3D model by Doug Ellison (@djellison)
Data from GIF posted here : https://science.nasa.gov/image-article/nasas-lucy-spacecraft-images-asteroid-donaldjohanson/ credit NASA/Goddard/SwRI/Johns Hopkins APL - Asteroid DJ from Gif - 3D model by...
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Today is the last day to submit abstracts for #COSPAR2025! Don't miss your chance to join the conversation about the ways #spaceresearch can improve life for humans on Earth, covering topics including planetary protection & #planetsci, #SpaceDebris, capacity building, #climatechange and much more 🔭
Committee on Space Research@cospar.bsky.social
⏰It's the final countdown...to turn in abstracts for the #COSPAR2025 Symposium in Nicosia, Cyprus. Submit by tomorrow, 23 April, to join us to explore this year's theme: Humanity’s Challenges and Celestial Solutions: www.cospar-assembly.org/symposia.php
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My new entry describing some preliminary results of @nasawatch.bsky.social #LucyMission.
A content easy to automatically translate to your preferred language:
theconversation.com/la-sonda-luc...
#PlanetSci
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Love this: "Collection of Antarctic micrometeorites stored in the surface snow near the Dome Fuji Station" cites my paper "Tensile strength of 67P/Churyumov-Gerasimenko nucleus material from overhangs".
From comets to the Antarctic! That's #PlanetaryScience! 😊☄️🌠🇦🇶
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Postdocs at @iaacsic.bsky.social organised a #JournalClub to discuss recently published results. Discussion this week: the 'bio-signature' detection on K2-18b... going in strong with the controversy! :) #PlanetSci
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Lucy has met with asteroid Donaldjohanson!
What a shape! One end is smoother! #planetsci 🔭
science.nasa.gov/image-articl...
science.nasa.gov
NASA’s Lucy Spacecraft Images Asteroid Donaldjohanson - NASA Science
In its second asteroid encounter, NASA’s Lucy spacecraft obtained a close look at a uniquely shaped fragment of an asteroid that formed about 150 million
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Well, this is cool: a planetary that orbits two brown dwarfs (i.e., it's a circumbinary planetary system), where the planet's orbit goes over the poles of the brown dwarfs and where there's a third brown dwarf orbiting the planetary system. So cool!
#planetsci 🧪
www.science.org/doi/10.1126/...
www.science.org
A tilted “Tatooine planet” whose two suns aren't stars at all
An indirectly detected planet on a highly inclined orbit about a pair of brown dwarfs shows that, when it comes to exoplanet diversity, anything goes.
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First image of asteroid Donaldjohanson taken by the NASA Lucy spacecraft yesterday.
As predicted, Donaldjohanson seems to be an elongated contact binary but with an odd shaped narrow neck between the two lobes. Size = 8 km x 3.5 km.
science.nasa.gov/image-articl...
#PlanetSci
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Strong support from The Planetary Society for NASA Space Science writ large: "If these cuts are enacted, the savings to taxpayers would be negligible, and the impact to science would be calamitous." #astronomy #planetsci www.nytimes.com/2025/04/21/o...
www.nytimes.com
Opinion | Trump’s Cuts to NASA Will Hurt Our Search for Alien Life (Gift Article)
Space science at NASA is on the chopping block.
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Asteroid Donaldjohanson appears to be larger than originally estimated, about 8 km long and 3.5 km wide at the widest point.
Image credit: NASA/Goddard/SwRI/Johns Hopkins APL/NOIRLab science.nasa.gov/image-articl...
#PlanetSci #SciComm 🧪
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A time-lapse of some images of asteroid (52246) Donaldjohanson during the encounter by Lucy!
Images taken on April 20, 2025, from a distance of 1,600 to 1,100 km.
Credit: NASA/Goddard/SwRI/Johns Hopkins APL
science.nasa.gov/image-articl...
#PlanetSci #SciComm 🧪
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Here is asteroid (52246) Donaldjohanson as seen by Lucy’s LORRI camera! It’s a contact binary/bi-lobate asteroid 🎉🎊
Image taken on April 20, 2025 from a range of approximately 1100 km.
Credit: NASA/Goddard/SwRI/Johns Hopkins APL/NOIRLab
urldefense.com/v3/__https:/...
#PlanetSci #SciComm 🧪
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